Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Microstructural Factors on Ductility in Steels containing Pearlite

펄라이트 함유강에서 연성에 영향을 미치는 미세조직 인자

  • 심혜정 (국민대학교 신소재공학부) ;
  • 송형락 (국민대학교 신소재공학) ;
  • 남원종 (국민대학교 신소재공학부)
  • Published : 2004.08.01
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Abstract

The effect of transformation temperature on microstructural features and their effects on ductility in 0.55%C steels were investigated, compared with in 0.82%C eutectoid steel. The samples were austenitized at 100$0^{\circ}C$ for 30min. followed by quenching in a salt bath in the temperature range of 500 ~ $620^{\circ}C$. It was found that reduction of area(RA) increased with increasing transformation temperature and then, decreased after reaching its maximum value in steels containing pro-eutectoid ferrite less than 6%. The thickness of lamellar cementite was found to be the main factor controlling RA. Additionally, the presence of cementite thickness for the maximum ductility in all the tested steels was observed as about 0.015${\mu}{\textrm}{m}$ for tested steels.

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References

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